If you're looking for a maintenance free and non-spillable battery for your bike, the Platinum AGM battery by BikeMaster is for you. Manufactured from absorbed glass mat that captures electrolytes, these batteries have a longer storage life and higher performance than standard wet batteries. They are permanently sealed so that you do not need to check levels or add water. This battery by BikeMaster comes with a one-year warranty. Greater cold-cranking amps. Longer service life. Resists sulfating. AGM Platinum Battery MS12-3L-B Battery, 12V Battery, 98mm L x 56mm W x 109mm H